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Mining trailing & reeling cablesDIN VDE 0250-8130.6/1 kV · 25–185 mm²Tunnel Trailing & LHD E-Loader

(N)TSWÖU / NTSWÖU-J 0.6/1 kV Tunnel & Mining CableDIN VDE 0250-813 0.6/1 kV tunnel trailing & Class 6 LHD e-loader reeling cable

DIN VDE 0250-813 NTSWÖU-J and NTSWÖU 0.6/1 kV (3 kV AC test) heavy-duty tunnel trailing and underground E-Loader reeling cables (25–185 mm²) with 3GI3 EPR insulation, GM1b inner sheath and yellow or black 5GM5 outer sheath.

Anti-torsion braid
Flame-retardant
Oil-resistant
Water-resistant
Order designation
NTSWÖU-J · 3×50 + 3×25/3
Phase size
50 mm²
Max. OD
51.7 mm
Current 30°C
202 A
Mass ≈
3,750 kg/km
Check against my drumAll sizes (9)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Rated voltage
0.6/1 kV (3 kV)
DIN VDE 0250-813
Core arrangement
3P+3E or KON+3ST
Split PE or 25KON braid
Phase size range
25–185 mm²
8 trailing + E-Loader
Sheath system
GM1b + 5GM5
Yellow or black 5GM5
Operating temp.
−25 to +90 °C
Fixed −40 to +90 °C
Conductor class
Class 5 / Cl. 6
Cl. 6 on E-Loader build

Application fit

Is NTSWÖU-J / NTSWÖU 0.6/1 kV Tunnel & E-Loader Cable right for your machine?

Designed for 0.6/1 kV underground mining, tunnel construction, crane power feeds and battery/trolley or cable-reeled electric LHD loaders (E-Loaders) where severe rock abrasion, guide-pulley bending, impact and wet headings demand a dual-sheathed GM1b + 5GM5 elastomer cable.

Trailing & towing

Suitable

NTSWÖU-J (25–185 mm²) is a heavy-duty 0.6/1 kV trailing power supply cable for tunnel drives, headings and mobile mine switchgear.

Cylindrical / multi-layer drum

Suitable

NTSWÖU E-Loader (3×50/25KON+3×ST) uses Class 6 extra-flexible tinned copper and copper-steel braided armour for LHD loader reeling.

Energy chain / drag chain

Suitable

Withstands guide pulleys, cable cars and reverse bending loads in underground haulage drifts.

Immersion & wet locations

Suitable

Rated for dry, damp and wet underground locations with oil-resistant (EN 60811-2-1) and flame-retardant 5GM5 outer sheath.

Free-hanging vertical run

Not suitable

Flexible unarmoured trailing construction — do not suspend in deep vertical mine shafts without support.

Use BS 6708 Type 20/21 Armoured
Typical machinesUnderground electric LHD loaders (E-Loaders)Tunnel construction & drill-jumbo feedsSubsurface mine haulage, cable cars & winchesHeavy industrial cranes & trolley systemsDamp & flooded mine roadway distribution

Construction

Layer by layer

Three flexible tinned copper phase conductors (Class 5 on NTSWÖU-J; Class 6 on NTSWÖU E-Loader) insulated with Type 3GI3 EPR rubber are laid up in contact with three split interstitial protective earth conductors (NTSWÖU-J) or three braided pilot cores (E-Loader), enclosed by a Type GM1b rubber inner sheath, an optional tensile-resistant copper/galvanised-steel braided concentric earth armour (25KON on E-Loader), and a heavy-duty yellow or black Type 5GM5 chlorinated rubber outer sheath.

123456
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Phase conductorElectrolytic stranded tinned copper wire, DIN VDE 0295 Class 5 (NTSWÖU-J) or Class 6 extra-flexible (E-Loader)DIN VDE 0295
2Core insulationEPR rubber compound Type 3GI3 (2.0 mm nominal wall on 3×50 E-Loader)DIN VDE 0207-20
3Interstitial earth / pilot coresThree split protective earth cores (25/3 to 95/3 on NTSWÖU-J) or 3 special Cu/steel-braided pilot cores (3×ST on E-Loader)DIN VDE 0250-813
4Inner sheathSpecial elastomeric rubber compound Type GM1b (3.0 mm wall on E-Loader)DIN VDE 0207-21
5Concentric Cu/steel braided earth (E-Loader)Combined copper and galvanised steel wire braided armour/earth conductor (25KON on E-Loader build)DIN VDE 0250-813
6Outer sheathHeavy-duty chlorinated elastomer Type 5GM5 (5.0 mm wall on E-Loader), yellow or black, oil and flame resistantDIN VDE 0207-21

NTSWÖU-J Tunnel Trailing Series (25–185 mm²)

Class 5 tinned Cu · 3×25+3×25/3 to 3×185+3×95/3 mm² · GM1b inner + yellow/black 5GM5 outer sheath · 40.0–77.1 mm OD

NTSWÖU E-Loader Reeling Build (3×50/25KON + 3×ST)

Class 6 extra-flexible tinned Cu · 2.0 mm EPR + 3.0 mm GM1b + 25KON Cu/steel braid + 5.0 mm yellow 5GM5 sheath · 56 mm OD

Technical data

Ratings & operating limits

Electrical

Rated & test voltage
U0/U 0.6/1 kV AC · Routine dielectric test voltage 3 kV AC
Current carrying capacity
131 A (25 mm²) to 461 A (185 mm²) according to DIN VDE 0298-4 (30 °C ambient)
Protective earth & pilot options
NTSWÖU-J: 3 split interstitial earth cores (25/3 to 95/3) · E-Loader: 25 mm² Cu/steel braided concentric earth (25KON) + 3 pilot cores (3×ST)

Thermal

Conductor temperature
+90 °C maximum continuous operating temperature · +250 °C short-circuit temperature
Ambient temperature range
Fixed installation −40 °C to +90 °C · Mobile / trailing operation −25 °C to +90 °C

Mechanical

Min. bending radius
According to DIN VDE 0298-3 Table 3 (4 × D fixed installation · 5 × D to 10 × D mobile/reeling)
E-Loader extreme mechanical reinforcement
Combined copper-steel braided concentric armour (25KON) over GM1b inner sheath resists LHD guide-pulley impact, crushing and high tensile loads

Resistance

Flame & oil resistance
Flame retardant to DIN EN 60332-1-2 / VDE 0482-332-1-2 · Oil resistant to HD/EN/IEC 60811-2-1
Abrasion, tear & wet-heading durability
Dual elastomer sheath (GM1b inner + 5GM5 outer) for dry, damp and flooded underground mines and tunnels

Reference standards

Applicable VDE standards
DIN VDE 0250-813 · DIN VDE 0250-1 · DIN VDE 0207-20 (3GI3) · DIN VDE 0207-21 (GM1b / 5GM5)
Conductor stranding classes
DIN VDE 0295 Class 5 tinned copper (NTSWÖU-J series) · DIN VDE 0295 Class 6 extra-finely stranded tinned copper (E-Loader series)

Identification

Outer jacket colour
High-visibility Yellow or Black Type 5GM5 polychloroprene outer sheath
Series variants
NTSWÖU-J Tunnel Trailing Series (3×25 to 3×185 mm² with split earths) · NTSWÖU E-Loader Series (3×50/25KON + 3×ST)

Sizes

8 standard NTSWÖU-J tunnel trailing sizes (25–185 mm²) & NTSWÖU Class 6 E-Loader reeling build

Includes split interstitial earth and 25KON concentric Cu/steel armour configurations, OD range, cable weight, 15 N/mm² tensile force and VDE 0298-4 ampacity.

NTSWÖU-J & E-Loader Series (0.6/1 kV)
Designation
DIN VDE 0250-813		Construction
Variant		Phase
mm²		Earth / Armour
& Pilots		Min. OD
mm		Max. OD
mm		Mass ≈
kg/km		Tensile 15N/mm²
N		Current 30°C
A (VDE 0298-4)		Enquiry
NTSWÖU-J · 3×25 + 3×25/3NTSWÖU-J (Cl. 5)253×25/340.044.02,4701,125131
NTSWÖU-J · 3×35 + 3×25/3NTSWÖU-J (Cl. 5)353×25/344.448.43,1501,575162
NTSWÖU-J · 3×50 + 3×25/3NTSWÖU-J (Cl. 5)503×25/347.751.73,7502,250202
NTSWÖU-J · 3×70 + 3×35/3NTSWÖU-J (Cl. 5)703×35/352.356.34,6903,150250
NTSWÖU-J · 3×95 + 3×50/3NTSWÖU-J (Cl. 5)953×50/359.963.96,2104,275301
NTSWÖU-J · 3×120 + 3×70/3NTSWÖU-J (Cl. 5)1203×70/363.867.87,4305,400352
NTSWÖU-J · 3×150 + 3×70/3NTSWÖU-J (Cl. 5)1503×70/369.273.28,9006,750404
NTSWÖU-J · 3×185 + 3×95/3NTSWÖU-J (Cl. 5)1853×95/373.177.110,3308,325461
NTSWÖU E-Loader · 3×50/25KON+3×STE-Loader (Cl. 6 + KON)5025KON + 3×ST54.056.04,9502,250202
  • On NTSWÖU E-Loader 3×50/25KON + 3×ST: insulation thickness is 2.0 mm, GM1b inner sheath thickness is 3.0 mm, 5GM5 outer sheath thickness is 5.0 mm, and nominal overall diameter is 56 mm (4,950 kg/km).
  • Current ratings are based on DIN VDE 0298-4 at 30 °C ambient temperature; standard drum packing length is 500 m.

Reel check

Will it fit your machine?

A first screen using datasheet values. Engineering confirms drum geometry, acceleration and tension with your quotation.

Check results

Enter your drum core diameterMinimum for this size is about 620 mm
Minimum bending radius
310 mm
Min. drum core diameter
≈ 620 mm
Cable weight on drum
375.0 kg
Outer diameter
51.7 mm
Indicative only: based on the datasheet outer diameter and 6 × OD bending radius. Current derating for wound layers per DIN VDE 0298-4 is assessed separately.

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
3 kV AC dielectric withstand test3.0 kV AC applied to 0.6/1 kV 3GI3 EPR insulated cores per DIN VDE 0250-813 and DIN VDE 0472-508Every shipping drum
Conductor, split earth & 25KON armour DC resistanceVerified on Class 5 / Class 6 tinned copper phase conductors and earth/pilot elements per DIN VDE 0472-501Every shipping drum
Sample tests
DIN EN 60332-1-2 flame & EN 60811-2-1 oil resistanceFlame propagation and hot oil immersion verified on Type 5GM5 heavy-duty elastomer outer sheathProduction batch

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

DIN VDE 0250-813CE · LVDRoHS · REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX · NTSWÖU-J 0.6/1 kV · VDE 0250-813
Delivery form
500 m standard wooden drums or custom reeling lengths on request
Lengths
500 m standard or custom cut lengths per tunnel/loader schedule
Certificate
EN 10204 3.1 factory routine test certificate with every drum
Quote response
Engineering specification and quote within 2 business hours

Technical documents

Downloads

PDF(N)TSWÖU / NTSWÖU-J 0.6/1 kV Tunnel & Mining Cable – technical datasheet9 sizes · construction, technical data, approvalsXLSXNTSWÖU-J / NTSWÖU 0.6/1 kV Tunnel & E-Loader Cable spec data (Excel)All 9 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What is the difference between NTSWÖU-J tunnel trailing cable and the NTSWÖU E-Loader cable?
NTSWÖU-J (3×25+3×25/3 to 3×185+3×95/3 mm²) uses Class 5 tinned copper conductors and three interstitial split earth cores inside a GM1b + 5GM5 dual elastomer jacket for general tunnel and mine trailing. The NTSWÖU E-Loader build (3×50/25KON + 3×ST) upgrades to extra-flexible Class 6 conductors, three copper/steel-braided pilot cores, and a combined copper-steel braided concentric armour/earth (25KON) under a 5.0 mm yellow 5GM5 outer sheath for underground LHD loader reeling and guide pulleys.
Why does the E-Loader variant use a combined copper-steel braided concentric earth (25KON)?
Electric LHD loaders (scooptrams) and underground cable cars subject reeling cables to sudden jerk tension, guide-pulley reverse bending and rockfall impact. Combining copper wires (for 25 mm² earth fault conductivity) with galvanised steel wires (for high axial tensile and radial crush strength) in a single concentric braid between the GM1b and 5GM5 sheaths protects the cores without sacrificing flexibility.
Why is a high-visibility yellow 5GM5 outer sheath specified for underground mining and tunnelling?
In dimly lit tunnel headings and LHD haulage drifts, a bright yellow Type 5GM5 polychloroprene outer sheath makes the trailing cable clearly visible to loader and drill-jumbo operators, reducing accidental run-overs while providing EN 60811-2-1 oil resistance and EN 60332-1-2 flame retardancy.
What operating temperatures apply to NTSWÖU-J in fixed versus mobile installations?
With Type 3GI3 EPR core insulation and GM1b/5GM5 elastomer sheaths, NTSWÖU-J is rated for +90 °C maximum continuous conductor temperature (+250 °C short-circuit), −40 °C to +90 °C in fixed installations, and −25 °C to +90 °C in mobile trailing service.

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01Selected sizes

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02Reel & motion

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03Message for our engineers

(N)TSWÖU Tunnel Trailing Cable NTSWÖU-J 0.6/1 kV Mining Cable

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
- Length and quantity: 
- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
- Destination country: 
- Equipment and operating conditions:
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